package com.mmall.concurrency.example.count;

import lombok.extern.slf4j.Slf4j;

import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Semaphore;

@Slf4j
public class CountExample1 {
    public static int clientTotal=5000;
    public static int threadTotal=200;

    public static int count=0;

    public static void main(String[] args) throws Exception{
        ExecutorService exe= Executors.newCachedThreadPool();
         final Semaphore semaphore =new Semaphore(threadTotal);
        final CountDownLatch countDownLatch=new CountDownLatch(clientTotal);
        for (int i =0;i<clientTotal;i++){
            exe.execute(()->{
                try {
                    semaphore.acquire();
                    add();
                    semaphore.release();
                } catch (Exception e){
                    log.error("线程异常");
                }
                countDownLatch.countDown();

            });
        }
        countDownLatch.await();
        exe.shutdown();
        log.info("count:{}",count);

    }

    private static void add() {
        count++;
    }

}
